Gene annotation pipeline for bacteria
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4.2 years ago
bird77 ▴ 70

I have a draft genome of a alpha-proteobacterium (genome size about 8Mbp) and I want to perform gene prediction and annotation.

Until now, I have used the RAST server for this task, but the amount of predicted genes with the annotation "hypothetical protein" is very high (about 60%).

What can you recommend for prokaryotic gene prediction and annotation workflows (I certainly can also combine different tools for gene prediction and annotation, but I do not know what the current standard is)?

Thank you so much for your assistance.

annotation genome • 1.8k views
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4.2 years ago
colindaven ★ 2.7k

Have a look at Prokka by Torsten Seeman, or the recent Genix.

Other places also have web based annotation pipelines, the NCBI one probably still exists.

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3.2 years ago
predeus ★ 1.6k

Prokka is probably most used in the field now. Using --proteins with a specific database (e.g. species-specific) seems like a good way to annotate most of the ORFs. Just make sure you get the reference proteins in the right format - they need to look something like this:

>gene_id ~~~gene_name~~~putative protein function

There are few scripts to make your protein annotations look like this. the problem is discussed in one of the issues on Prokka github repository.

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